The child is not a passive recipient of knowledge but an active participant in the learning process.

宇宙的美在于它的复杂性和简单性。

"The best performances come from a place of vulnerability and truth."

I don't believe in perfection. I think that's a very dangerous idea. It's a very unattainable idea.

2004年9月13日，81岁的杨振宁在清华大学开始为本科生讲授普通物理。他说